Southwest® flights from Tucson to St. Louis from $135

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Low fares from Tucson to St. Louis

$

Tucson (TUS)to

St. Louis (STL)
Depart: 01/26/2027

One-way

Basic

From
$135
Seen: 14 hrs ago

Tucson (TUS)to

St. Louis (STL)
Depart: 11/12/2026

One-way

Basic

From
$135
Seen: 8 hrs ago

Tucson (TUS)to

St. Louis (STL)
Depart: 11/23/2026

One-way

Basic

From
$135
Seen: 15 hrs ago

Tucson (TUS)to

St. Louis (STL)
Depart: 11/09/2026

One-way

Basic

From
$135
Seen: 20 hrs ago

Tucson (TUS)to

St. Louis (STL)
Depart: 12/04/2026

One-way

Basic

From
$156
Seen: 18 hrs ago

Tucson (TUS)to

St. Louis (STL)
Depart: 12/13/2026

One-way

Basic

From
$156
Seen: 19 hrs ago

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Explore flights from Tucson to St. Louis

Oct 2026
From$474*
Seen: 4 hrs ago
One Way/Basic
Nov 2026
From$135*
Seen: 15 hrs ago
One Way/Basic
Dec 2026
From$156*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $135
cmp-daily-histogram-bars-legend-max-price-aria-label $549
Displaying fares for October-2026
  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    21

    Wed

    OCT

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

  • TUS–STL, 10/23/2026: From $549
    23

    Fri

  • TUS–STL, 10/24/2026: From $549
    24

    Sat

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    25

    Sun

  • TUS–STL, 10/26/2026: From $549
    26

    Mon

  • TUS–STL, 10/27/2026: From $474
    27

    Tue

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    28

    Wed

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    29

    Thu

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    30

    Fri

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    31

    Sat

  • TUS–STL, 11/01/2026: From $474
    01

    Sun

    NOV

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    02

    Mon

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    03

    Tue

  • TUS–STL, 11/04/2026: From $289
    04

    Wed

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    05

    Thu

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    06

    Fri

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    07

    Sat

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    08

    Sun

  • TUS–STL, 11/09/2026: From $135
    09

    Mon

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    10

    Tue

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    11

    Wed

  • TUS–STL, 11/12/2026: From $135
    12

    Thu

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    13

    Fri

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    14

    Sat

  • TUS–STL, 11/15/2026: From $379
    15

    Sun

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    16

    Mon

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    17

    Tue

  • TUS–STL: cmp-view-offers-disclaimer. Find Offers
    18

    Wed

  • TUS–STL, 11/19/2026: From $239
    19

    Thu

  • TUS–STL, 11/20/2026: From $196
    20

    Fri

    • Range$135-$549

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    Tucson International Airport
    Arriving at:
    Lambert-St Louis Int'l Airport
    Distance:
    1244 miles

    Questions we hear the most

    There are 128 weekly flights from Tucson to St. Louis on Southwest Airlines.
    To find the lowest fares by day and time to fly Tucson to St. Louis with Southwest, check out our Low Fare Calendar.
    You can rent a car at Lambert-St Louis Int'l Airport book yours with your flight.
    Yes! Flights from Tucson to St. Louis—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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